CN203166360U - Switch cabinet valve opening trolley - Google Patents

Abstract

The utility model relates to a trolley for opening the valve of a switch cabinet, which comprises a connecting rod mechanism, a joint mechanism, a joint adjusting mechanism and a booster mechanism; the connecting rod mechanism includes a horizontal connecting rod and a vertical connecting rod; Assembly, the joint assembly includes a side bar, a pair of drive joints; the joint adjustment mechanism includes a brake line, a first brake line fixing part arranged on a longitudinal link, a control device, and a second brake line fixing part set on a drive joint And the movable part of the brake line on the other drive connector, the brake line is connected to the second fixed part of the brake line and the movable part of the brake line, the fixed part of the first brake line, and the brake line on the other set of joint components in sequence The movable part and the fixed part of the second brake line; the booster mechanism includes an operating rod. The utility model can assist personnel to open the valve, guarantee the safety of staff and equipment, and can eliminate the mechanical jamming failure of the valve. The utility model has the advantages of simple structure and strong practicability.

Description

Switch cabinet valve opening trolley

technical field

The utility model relates to an opening trolley for assisting in opening a valve of a switch cabinet.

Background technique

The State Grid Corporation of China's "Condition Maintenance Regulations for Power Transmission and Transformation Equipment" requires that new substations and substation equipment after overhaul and technical transformation need to be checked for phase sequence work. In the process of checking the phase sequence, due to the structure of the current equipment and the lack of corresponding special tools, the operator must enter the switch cabinet and manually push the drive device of the valve to open the valve. At this time, the distance between the staff and the live contact It is only slightly larger than 0.7 meters, just reaching the specified safety distance of 10kV equipment, but this still poses a great threat to the personal safety of the staff, and also brings potential safety hazards to the equipment.

Through the review of the technical bulletin, it is found that the mechanical jamming fault of the switchgear valve has become one of the mainstream faults of the switchgear. However, the current valve device is in the closed state when it is in the test position, and it is necessary to rely on the operator to enter the switch cabinet and manually adjust the valve driving device to remove the jamming fault to open the valve. This kind of mode is more dangerous, and it is easy to cause the electric shock accident of the operator when the operation is wrong, and the safety is not high. Moreover, the traditional valve mechanical failure treatment requires the bus to be out of service, which brings huge losses to the operation of the power grid, especially for important line loads, it is impossible to cut off the power for maintenance, which has considerable hidden dangers to the operation of the power grid.

Contents of the invention

The purpose of the utility model is to provide a trolley that can open the valve of the switch cabinet with electricity and can handle the stuck fault of the valve under the condition of not stopping the bus.

For achieving the above object, the technical scheme that the utility model adopts is:

A switchgear valve opening trolley is used to open the valve of a switchgear in a substation. The switchgear is provided with a valve driving device that drives the valve to be opened. The switchgear valve opening trolley includes a linkage mechanism, Joint mechanism, joint adjustment mechanism, booster mechanism;

The link mechanism includes a horizontal link that can be adjusted in length and extends along the X direction, and a vertical link that is vertically connected to the middle of the horizontal link and extends along the Y direction;

The joint mechanism includes two sets of joint assemblies symmetrically arranged at both ends of the horizontal connecting rod, and the joint assembly includes a side bar connected with the horizontal connecting rod and extending along the Z direction, arranged on A pair of drive joints on the side bar that are matched with the valve drive device and can move in the Z direction, and the drive joints are arranged on the side bar through a joint connection device;

The joint adjustment mechanism includes a brake wire, a first brake wire fixing part arranged on the longitudinal link and capable of moving in the Y direction, and a control device that drives the first brake wire fixing part to move in the Y direction 1. The second brake line fixed part on one of the drive joints in each group of joint assemblies and the brake line movable part on the other drive joint, and the brake lines are sequentially connected to the The second brake line fixed part and the brake line movable part on one set of the joint assembly, the first brake line fixed part, the brake line movable part and the second brake line located on the other set of the joint assembly wire fixing part, and the brake wire is fixedly connected with the first brake wire fixing part and the second brake wire fixing part, and is movably connected with the brake wire moving part;

The booster mechanism includes an operating rod connected with the linkage mechanism and extending along the Y direction, the operating rod and the longitudinal connecting rod are located on the same side of the horizontal connecting rod.

Preferably, the horizontal connecting rod includes a first horizontal rod, two second horizontal rods arranged at both ends of the first horizontal rod and in the same direction as the first horizontal rod. The first long hole extending in the X direction, the second crossbar is connected to both ends of the first crossbar through the first screw matched with the first long hole, and the joint mechanism is set on the second crossbar.

Preferably, the section of the first cross bar is an unclosed rectangular frame and forms a rectangular inner cavity space, and the second cross bar is inserted into the inner cavity space.

Preferably, the switch cabinet is provided with a track, and the lower part of the side bar is provided with several rollers matched with the track.

Preferably, the lower part of each side bar is provided with two said rollers, the lower part of said side bar is fixedly provided with a mounting bracket extending along the Y direction, and said rollers are arranged and installed on on the mounting bracket.

Preferably, the joint connection device includes a second long hole opened on the side bar and extending along the Z direction, a second screw matched with the second long hole, and the drive joint is connected to the second long hole. The second screw is fixedly connected and located on the outside of the side bar, and the second brake line fixed part or the brake line movable part is fixedly connected with the second screw and located on the A spring stretching along the Z direction is also arranged between the drive joint and the side rod on the inner side of the side rod.

Preferably, the longitudinal connecting rod is provided with a third long hole along the Y direction, and the control device includes a worm arranged in the longitudinal connecting rod along the Y direction, and a A nut, a power device that drives the worm to rotate, and the first brake line fixing part passes through the third long hole and is fixedly connected with the nut.

Preferably, the power device includes a crank handle arranged at the end of the longitudinal connecting rod and connected with the worm.

Preferably, the linkage mechanism is provided with two operating rods, the operating rods are symmetrically arranged on both sides of the longitudinal connecting rod in the X direction, and one end of the operating rod It is fixedly connected to the horizontal connecting rod, and the other end of the operating rod is provided with an operating handle.

Preferably, the operating rod is connected with the linkage mechanism through standard screws.

Due to the application of the above technical solutions, the utility model has the following advantages compared with the prior art: the switchgear valve opening trolley of the utility model can assist the staff to open the valve of the switchgear, increase the distance between the staff and the live contact to ensure the work The safety of personnel and equipment can be eliminated, and the mechanical jamming fault of the valve can be eliminated without stopping the bus, so as to ensure the operation of the power grid. The utility model has the advantages of simple structure, convenient operation, strong practicability and high popularization value.

Description of drawings

Accompanying drawing 1 is the perspective view of the switchgear valve opening dolly of the utility model.

Accompanying drawing 2 is the perspective view of the switchgear valve opening trolley of the utility model.

Accompanying drawing 3 is the perspective view of the switchgear valve opening trolley of the utility model.

Accompanying drawing 4 is the front view of the switchgear valve opening trolley of the utility model.

Accompanying drawing 5 is the rear view of the switchgear valve opening trolley of the utility model.

Accompanying drawing 6 is the top view of the switchgear valve opening trolley of the utility model.

Accompanying drawing 7 is the left side view of the switchgear valve opening trolley of the utility model.

In the above accompanying drawings: 1, horizontal connecting rod; 2, vertical connecting rod; 3, the first cross bar; 4, the second cross bar; 5, the first long hole; 6, the first screw; 7, ingot screw; 8 , double-headed screw; 9, joint assembly; 10, side rod; 11, drive joint; 12, second long hole; 13, second screw; 14, mounting frame; 15, roller; 16, first brake line fixing part ; 17, control device; 18, the second brake line fixed part; 19, brake line movable part; 20, the third long hole; 21, worm; 22, crank handle; 23, spring; 24, operating lever; 25, standard Screw; 26, operating handle.

Detailed ways

The utility model will be further described below in conjunction with the embodiment shown in the accompanying drawings.

Embodiment 1: See accompanying drawings 1 to 7. A switch cabinet in a substation has an openable valve, and a valve driving device for driving the valve to open is arranged inside the switch cabinet and a track is provided.

A switch cabinet valve opening trolley for assisting workers to open the valve through a valve driving device, which includes a link mechanism, a joint mechanism, a joint adjustment mechanism, and a booster mechanism.

The link mechanism includes a horizontal link 1 that can be adjusted in length and extends along the X direction, and a vertical link 2 that is vertically connected to the middle of the horizontal link 1 and extends along the Y direction. Wherein, the horizontal connecting rod 1 includes a first horizontal rod 3 and two second horizontal rods 4 arranged at both ends of the first horizontal rod 3 and in the same direction. The cross section of the first cross bar 3 is an unclosed rectangular frame and forms a rectangular inner cavity space, and the second cross bar 4 is inserted into the inner cavity space and can slide therein along the X direction. Two first elongated holes 5 extending along the X direction are provided on the first crossbar 3, respectively corresponding to two second crossbars 4, and the second crossbars 4 pass through the first long holes 5 matched with Screws 6 are connected to both ends of the first cross bar 3 . The first screw 6 can adopt the ingot screw 7 and the double-ended screw 8 to coordinate and fix the first cross bar 3 and the second cross bar 4 . When the length of the horizontal connecting rod 1 needs to be adjusted, the first screw 6 is loosened, and the first horizontal rod 3 and the second horizontal rod 4 are relatively slid to a suitable position, and finally the first screw 6 is tightened. The longitudinal link 2 adopts a bar member with a bend, and one end thereof is welded and fixed to the center of the transverse link 1 , that is, welded and fixed to the center of the first transverse bar 3 .

The joint mechanism is arranged on the second cross bar 4 . The joint mechanism includes two sets of joint assemblies 9 symmetrically arranged at both ends of the transverse connecting rod 1 . The joint assembly 9 includes a side bar 10 connected with the transverse connecting rod 1 and extending along the Z direction, and a pair of driving joints 11 arranged on the side bar 10 that cooperate with the shutter driving device and can move along the Z direction. The driving joint 11 is arranged on the side bar 10 through the joint connecting device. The joint connection device includes a second long hole 12 opened on the side bar 10 and extending along the Z direction, and a second screw 13 matched with the second long hole 12; the drive joint 11 is fixedly connected with the second screw 13 and is located on the side The outer side of the bar 10 (the "outer side" refers to the side of the side bar 10 away from the transverse connecting rod 1 ). The cross-section of the side bar 10 is also an unclosed rectangular frame, and both ends of the side bar 10 in the Y direction are bent toward its inner side (the "inner side" refers to the side of the side bar 10 close to the horizontal link 1 ). The lower part of the side bar 10 is fixedly provided with a mounting frame 14 extending along the Y direction, and each mounting frame 14 is provided with two rollers 15, and the rollers 15 are arranged and installed on the mounting frame 14 along the Y direction. Compatible with the inner track.

The joint adjustment mechanism includes a brake wire (the brake wire is not shown in the drawings), a first brake wire fixing part 16 that is arranged on the longitudinal link 2 and can move along the Y direction, and drives the first brake wire fixing part 16 along the Y direction. The control device 17 for direction movement, the second brake line fixed part 18 on one drive joint 11 in each set of joint assemblies 9 and the brake line movable part 19 on the other drive joint 11 . Wherein, on each joint assembly 9 , the second brake wire fixing part 18 is arranged on the lower driving joint 11 , and the brake wire moving part 19 is arranged on the upper driving joint 11 .

A third long hole 20 along the Y direction is opened above the longitudinal connecting rod 2 and at least a part of the longitudinal connecting rod 2 is a hollow structure. The control device 17 includes a worm 21 arranged in the longitudinal connecting rod 2 along the Y direction, a nut matched with the worm 21, and a power device for driving the worm 21 to rotate. The first brake line fixing part 16 passes through the third long hole 20 and the nut. Phase fixed connection. The power device includes a crank handle 22 arranged at the end of the longitudinal connecting rod 2 and connected with the worm 21 . When the handle 22 is cranked by hand, it drives the worm 21 to rotate, thereby prompting the nut to drive the first brake line fixing part 16 to move along the axial direction of the worm 21 , ie in the Y direction.

The second brake line fixing part 18 is connected with the second screw 13 connected to the lower driving joint 11 in each group of joint assemblies 9, and it is positioned at the inner side of the side bar 10; and the brake line movable part 19 is connected with each group The second screw 13 to which the upper drive joint 11 of the joint assembly 9 is connected is connected, and it is also located on the inner side of the side bar 10 . That is to say, both the second brake wire fixing portion 18 and the brake wire movable portion 19 are disposed in the concave space formed by the bent end of the side bar 10 . A spring 23 extending and contracting along the Z direction is also arranged between the driving joint 11 and the side rod 10 . Wherein, the spring 23 connected with the driving joint 11 above is positioned at the inner side of the side bar 10, one end of which is fixedly connected to the upper end of the side bar 10, and the other end is connected with the driving joint 11 by being connected with the movable part 19 of the brake line . And the spring 23 that is connected with the drive joint 11 below is positioned at the outside of side bar 10, and its one end is connected with side bar 10 by being fixedly connected on the mounting frame 14 of side bar 10 bottoms, and the other end is directly connected with drive joint 11 connected.

The brake wires are sequentially connected to the second brake wire fixed part 18 and the brake wire movable part 19 on one group of joint assemblies 9, the first brake wire fixed part 16, the brake wire movable part 19 and the brake wire movable part on another group of joint assemblies 9. The second brake line fixing part 18, and the brake line is fixedly connected with the first brake line fixing part 16 and the second brake line fixing part 18, and is movably connected with the brake line movable part 19. When the first brake line fixing part 16 moves along the Y direction, the two driving joints 11 in each group of joint assemblies 9 can be moved closer or farther away from each other along the Z direction through the pulling action of the brake line, thereby adjusting the distance between the two. distance. In the process of moving the driving joint 11 , the spring 23 is urged to be elastically deformed.

The booster mechanism includes two operating rods 24 connected with the link mechanism and extending along the Y direction. The operating rod 24 is located on the same side of the horizontal connecting rod 1 as the longitudinal connecting rod 2 , and is symmetrically arranged on both sides of the vertical connecting rod 2 in the X direction. One end of the operating rod 24 is fixedly connected to the horizontal connecting rod 1 through a standard screw 25 , and the other end of the operating rod 24 is provided with an operating handle 26 . The operating rod 24 and the operating handle 26 are made of insulating epoxy resin material.

When the switch cabinet valve opening trolley is in use, the staff can hold the operating handle 26 to push the trolley to move on the track in the switch cabinet, and its drive joint 11 is connected and matched with the valve drive device of the switch cabinet, so that The staff can indirectly push the valve of the switch cabinet within a relatively long distance, thereby ensuring the safety of personnel. The distance between the drive joints 11 can be adjusted through the joint adjustment mechanism, thereby controlling the width of the drive joints 11, and the adjustable transverse link 1 can make the overall width of the trolley be adjusted so that it can be used in multiple models The valve of the switchgear is opened. In addition, a limiting groove can also be provided on the driving joint 11, so that the driving joint 11 can be fixed at a corresponding position after the valve is successfully opened.

The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present utility model, and its purpose is to enable those familiar with this technology to understand the content of the present utility model and implement it accordingly, and not to limit the protection scope of the present utility model. All equivalent changes or modifications made according to the spirit of the utility model shall fall within the protection scope of the utility model.

Claims (10)

1. A switchgear valve opening dolly, used to open the valve of the switchgear in the substation, described switchgear is provided with a valve driving device that drives the described valve to open, it is characterized in that: the described switchgear valve is opened The trolley includes a link mechanism, a joint mechanism, a joint adjustment mechanism, and a booster mechanism; The link mechanism includes a horizontal link that can be adjusted in length and extends along the X direction, and a vertical link that is vertically connected to the middle of the horizontal link and extends along the Y direction; The joint mechanism includes two sets of joint assemblies symmetrically arranged at both ends of the horizontal connecting rod, and the joint assembly includes a side bar connected with the horizontal connecting rod and extending along the Z direction, arranged on A pair of drive joints on the side bar that are matched with the valve drive device and can move in the Z direction, and the drive joints are arranged on the side bar through a joint connection device; The joint adjustment mechanism includes a brake wire, a first brake wire fixing part arranged on the longitudinal link and capable of moving in the Y direction, and a control device that drives the first brake wire fixing part to move in the Y direction 1. The second brake line fixed part on one of the drive joints in each group of joint assemblies and the brake line movable part on the other drive joint, and the brake lines are sequentially connected to the The second brake line fixed part and the brake line movable part on one set of the joint assembly, the first brake line fixed part, the brake line movable part and the second brake line located on the other set of the joint assembly wire fixing part, and the brake wire is fixedly connected with the first brake wire fixing part and the second brake wire fixing part, and is movably connected with the brake wire movable part; The booster mechanism includes an operating rod connected with the linkage mechanism and extending along the Y direction, the operating rod and the longitudinal connecting rod are located on the same side of the horizontal connecting rod. 2. The trolley for opening the switch cabinet valve according to claim 1, characterized in that: the horizontal connecting rod includes a first horizontal rod, two ends arranged at both ends of the first horizontal rod and in the same direction as the first horizontal rod The second crossbar, the first crossbar is provided with a first long hole extending along the X direction, and the second crossbar is connected to the first crossbar through a first screw matched with the first long hole. the two ends of the first cross bar, and the joint mechanism is arranged on the second cross bar. 3. The trolley for opening the switchgear valve according to claim 2, characterized in that: the section of the first cross bar is an unclosed rectangular frame and forms a rectangular inner cavity space, and the second cross bar is inserted into In the inner cavity space. 4. The trolley for opening the switch cabinet valve according to claim 1, characterized in that: the switch cabinet is provided with a track, and the lower part of the side bar is provided with several rollers matching the track. 5. The trolley for opening the switch cabinet valve according to claim 4, characterized in that: the lower part of each said side bar is provided with two said rollers, and the lower part of said side bar is fixedly arranged with a wheel along the Y direction. An extended mounting frame, the rollers are arranged and installed on the mounting frame along the Y direction. 6. The trolley for opening the switch cabinet valve according to claim 1, characterized in that: the joint connection device includes a second long hole opened on the side bar and extending along the Z direction, and the second long hole is connected with the first The second screw matched with the two long holes, the drive joint is fixedly connected with the second screw and is located outside the side bar, the second brake wire fixing part or the brake wire The movable part is fixedly connected with the second screw and located inside the side rod, and a spring stretching along the Z direction is also arranged between the driving joint and the side rod. 7. The trolley for opening the switch cabinet valve according to claim 1, characterized in that: said longitudinal connecting rod is provided with a third long hole along the Y direction, and said control device includes a third slot along the Y direction. The worm in the longitudinal connecting rod, the nut matched with the worm, the power device for driving the worm to rotate, the first brake line fixing part passes through the third long hole and the The nut is fixedly connected. 8. The trolley for opening the valve of the switchgear according to claim 7, wherein the power device includes a crank handle arranged at the end of the longitudinal connecting rod and connected with the worm. 9. The trolley for opening the switch cabinet valve according to claim 1, characterized in that: said linkage mechanism is provided with two said operating rods, and said operating rods are symmetrically arranged on said longitudinal On both sides of the connecting rod in the X direction, one end of the operating rod is fixedly connected to the horizontal connecting rod, and the other end of the operating rod is provided with an operating handle. 10. The trolley for opening the switch cabinet valve according to claim 1 or 9, characterized in that: the operating rod is connected with the connecting rod mechanism through standard screws.

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